Worst Pills, Best Pills Newsletter Articles

Search results below include Worst Pills, Best Pills Newsletter Articles where your selected drug is a secondary subject of discussion

Watch Out for Interactions with Tamoxifen (NOLVADEX)
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(March 2009)
Tamoxifen (NOLVADEX) is still widely and successfully used for treatment of breast cancer. However, when used along with certain other drugs, its effectiveness can be significantly reduced. The article explains how this can happen and lists 19 different drugs that can cause this serious problem if used with tamoxifen.

Watch out for Interactions Between Drugs for Erectile Dysfunction and Other Medications
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(January 2009)
The article lists 56 drugs that can interact with the three drugs for erectile dysfunction (ED): sildenafil (VIAGRA), tadalafil (CIALIS) and vardenafil (LEVITRA). Eight of the drugs are either nitrates such as nitroglycerin or a certain group of high blood pressure drugs.In combination with ED drugs, these drugs can cause a dangerous fall in blood pressure that could lead to a heart attack or stroke. Thirty-two other drugs can inhibit the enzyme that helps the body to eliminate the ED drugs, resulting in abnormally high blood levels of the drugs and a potentially harmful "overdose" even though you are actually taking the recommended amount. The other 16 drugs speed up the metabolism of the ED drugs, thereby lowering the blood levels and reducing the effectiveness of the ED drugs.

29 Medications That May Cause Adverse Interactions with Thyroid Drugs
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(September 2008)
Thyroid medications are among the most widely-prescribed drugs in the U.S. In this article, we review 29 different medications that can have harmful interactions with thyroid medicines such as levothyroxine (Synthroid). There are four major kinds of interaction problems that can occur:
• Certain medications can decrease the absorption of levothyroxine resulting in lower levels in the blood.
• Other medications can increase the rate at which the body gets rid of levothyroxine, also resulting in lower thyroid levels in the blood.
• Other medications can cause changes of levothyroxine binding in blood, decreasing the body's ability to use levothyroxine.
• Levothyroxine can affect the safety or effectiveness of other medications by raising or lowering the levels of these other drugs in the blood, causing them to be either infective (lower levels) or dangerous (higher levels).

Codeine: The Drug With Multiple Personalities
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(June 2008)
Codeine is routinely converted to morphine in the body in order for it to be an effective painkiller. The metabolism of codeine to morphine takes place through the actions of an enzyme in the liver. The article explains how various drugs and or a person's genetic makeup can greatly influence the conversion of codeine to morphine, making its pain-relieving properties too week if not enough conversion occurs and resulting in what amounts to an overdose at the recommended dose if the conversion to morphine is too rapid. Fourteen drugs that inhibit the conversion to morphine are listed in the article.

Calcium Channel Blocker Drug Interactions
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(May 2008)
This article lists more than 60 prescription drugs that can interact with calcium channel blocking drugs such as amlodipine (NORVASC),diltiazem (CARDIZEM, DILACOR XR TIAZAC)or nifedipine (PROCARDIA)to either cause toxicity or to lessen the effectiveness of the calcium channel blocking drugs. Included in the lists are a number of drugs that we list in Worst Pills, Best Pills as DO NOT USE or LIMITED USE drugs. The article also explains the different kinds of toxicity that can ensue from these interactions.

Drug Interactions: Warfarin (COUMADIN)
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(December 2007)
This article explains how to understand the International Normalized Ratio (INR), a test applied to a sample of a patient’s blood to determine how “thin” it is when you are using the blood thinner COUMADIN (warfarin). In addition, the article lists more than 50 drugs or dietary supplements that can interact harmfully with COUMADIN to cause the blood to be too thin (abnormal bleeding) or not thin enough which could result in lessening the effect of COUMADIN in stopping blood clot formation.